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The vapor above a mixed drink at room temperature contains 41% ethyl alcohol by mass. What is the mass percent composition for each component of the solution? Assume that the mixed drink is only composed of ethyl alcohol and water (pretty boring). Pure ethyl alcohol and water have vapor pressures at room temperature of 58.9 torr and 23.8 torr, respectively.
The melting point of tropylium bromide is above 200 degree C, quite high for an organic compound. How can you account for these experimental observations?
You have a stock solution of 14.2 m NH3 . How many milliliters of this solution should you dilute to make 1350 mL of 0.220 M NH3
Explain the importance of a universal standard in measurement
A sodium chloride solution is made at 68 deg F that contains 16.28 g of NaCl in 100 cc of fresh water. The fresh water density is 0.9982 g/cc. What is the density of the solution in g/cc and Lbm/gal
At beginning of the work up stage of the lab procedure, the two phase reaction mixture probably contains the following:
determine whether a solid forms when solutions containing the following salts are mixed. if so write the net ionic equation for the reaction. a)Na3PO4(aq) and AgNO3(aq). b)K2SO4(aq) and Na2CO3(aq). c)Pb(NO3)2(aq) and Na2CO3(aq). d)BaCl2(aq) and KO..
a 0.21l sample of hydrogen gas is collected over water. the reaction that allowed the gas to be liberated was between
Explain the effect of the following experimental errors on your results: a) You add hexane to the reaction flask instead of 1-hexene b) You use 3% hydrogen peroxide instead of 30% c) You forget to add potassium carbonate in the seperation step.
Explain the following observations in terms of shifting equilibria by le Chatelier's principle. Write the equation for the equilibrium involved in each case.
Why is the peroxide anion such a strong oxidizing agent and describe qualitatively how the conclusions of Bohr and Rydberg are essentially the same?
How many grams of solid calcium hydroxide Ca(OH)2 are required to prepare 200 mL of a 0.05 M solution. Molar mass (formula weight) of Ca = 40.1 g/mol, O = 16.0 g/mol, and H = 1.01 g/mol.
What is osmium's molar capacity if the two substances reach thermal equilibrium at 100 degrees Celsius? Osmium, the densest known metal, has a density
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